Great Barrier Reef

• 13 Aug 2024

In August, 2024, a new study has shown that the Great Barrier Reef is experiencing its highest sea surface temperatures in 400 years, with temperatures 0.19°C above the previous record. This rise has caused extensive coral bleaching.

Key Points

• Coral Bleaching Impact: The bleaching results from corals expelling the algae that provide them with nutrients and color, leaving them vulnerable to disease and death.
• Study Findings: Study reveals that recent summer temperatures are 1.7°C higher than the coolest summers over the past 400 years. Researchers used historical sea surface temperature data from various sources, including coral cores.
• UNESCO Controversy: The study's findings have led to criticism of UNESCO's decision not to reclassify the reef as “in danger,” with scientists arguing that the reef is at immediate risk.
• Call for Action: Experts emphasize the urgent need for global emission reductions to protect the reef. Despite the dire situation, there is hope if swift action is taken to mitigate climate impacts.